WO2012119491A1 - Procédé de transmission de données non-i/q et dispositif d'interface radio publique commune - Google Patents

Procédé de transmission de données non-i/q et dispositif d'interface radio publique commune Download PDF

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Publication number
WO2012119491A1
WO2012119491A1 PCT/CN2012/070843 CN2012070843W WO2012119491A1 WO 2012119491 A1 WO2012119491 A1 WO 2012119491A1 CN 2012070843 W CN2012070843 W CN 2012070843W WO 2012119491 A1 WO2012119491 A1 WO 2012119491A1
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WIPO (PCT)
Prior art keywords
packet
container
information
radio interface
public radio
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PCT/CN2012/070843
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English (en)
Chinese (zh)
Inventor
包盛花
李孝朋
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华为技术有限公司
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Priority to EP12755286.7A priority Critical patent/EP2672743B1/fr
Publication of WO2012119491A1 publication Critical patent/WO2012119491A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • Non-I/Q data transmission method and device for general public wireless interface This application claims to be a non-I/Q data transmission method submitted to the Chinese Patent Office on March 4, 2011, the application number is 201110051397.3, and the invention name is "general public wireless interface". The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
  • TECHNICAL FIELD The present invention relates to the field of communications technologies, and in particular, to a non-I (In-Phase)/Q (Quadature Phase) data transmission method and apparatus for a general public radio interface. Background technique
  • the CPRI (Common Public Radio Interface) protocol provides a common protocol for the interface between a wireless device controller and a wireless device.
  • the existing wireless service data transmitted by the CPRI protocol is based on I/Q digital baseband data. Therefore, the CPRI interface of the wireless communication system is divided into uplink demodulation before and after downlink modulation. That is, the REC (Radio Equipment Control) completes the data baseband processing, and the RE (Radio Equipment) completes the analog radio frequency domain function.
  • the prior art has at least the following problems:
  • the CPRI interface when the CPRI protocol transmits I/Q-based digital baseband data, the CPRI interface is located before the uplink demodulation and after the downlink modulation.
  • the service data transmitted on the CPRI interface is non-I/Q-based digital baseband data, which is referred to as non-I/Q data.
  • the wireless service data is non-I/Q data, the existing CPRI protocol cannot complete the transmission between the REC and the RE, and there are four major limitations in the application. Summary of the invention
  • the embodiment of the present invention provides a non-I/Q data transmission method and apparatus for a common public wireless interface, and the technical solution is as follows:
  • One aspect of the present invention provides a non-I/Q data transmission method for a universal public radio interface, including: data transmitted on the general public radio interface when the general public radio interface is located before downlink modulation or after uplink demodulation
  • the header is added and encapsulated into a packet; the header includes at least one or more of the following fields: a destination address field, a source address field, a packet type field, a packet start/end flag field, a data length field, a sequence number field, and the information
  • the packet is mapped into one or more packet containers; the packet container is carried into a superframe; and the superframe is transmitted over the universal public wireless interface.
  • a non-I/Q data transmission apparatus of a universal public radio interface including: a packaging module, configured to: when a general public radio interface is located before downlink modulation or after uplink demodulation, The data transmitted on the wireless interface is encapsulated into a packet after adding a header; the header includes at least one or more of the following fields: destination address field, source address field, packet type field, packet start/end flag field, data length field, sequence number a mapping module, configured to map the information packet into one or more information container containers; a bearer module, configured to carry the information packet container into a superframe; and a transmission module, configured to: Transmission through the universal public wireless interface.
  • a packaging module configured to: when a general public radio interface is located before downlink modulation or after uplink demodulation, The data transmitted on the wireless interface is encapsulated into a packet after adding a header; the header includes at least one or more of the following fields: destination address field, source address field, packet type field, packet start/end flag field, data length field, sequence
  • Embodiments of the present invention may transmit the superframe through the universal public radio interface by carrying non-I/Q data into the superframe to be before the general public radio interface is located before downlink modulation or after uplink demodulation. This enables non-I/Q data to be transmitted between the RE and the REC, and the non-I/Q data is carried in the CPRI frame.
  • FIG. 2 is a schematic flow chart of another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a packet according to an embodiment of the present invention.
  • step 203 is a schematic flowchart of step 203 according to another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of step 204 according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural view of another embodiment of the present invention.
  • Figure 7 is a schematic structural view of another embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a frame structure of a packet carrying a plurality of packet containers according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a superframe bearer packet container according to an embodiment of the present invention.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a RE can be a wireless device that provides voice and/or data connectivity to a user.
  • the REC which is the connection point between the base transceiver station and the mobile switching center, is an integral part of the access network and also provides an interface for exchanging information between the base station and the mobile switching center.
  • a base station controller usually controls several base transceiver stations, and its main functions are to perform wireless channel management, implement call and communication link establishment and teardown, and control the handover of mobile stations in the control area.
  • the REC can be a base station controller in GSM or CDMA (BSC, Base Station) Controller ) can also be a Radio Network Controller ( RNC) in WCDMA.
  • BSC Base Station Controller
  • the term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists separately, and A and B exist simultaneously. There are three cases of B alone.
  • the symbol "," in this context, generally indicates that the contextual object is an "or" relationship.
  • One embodiment of the present invention proposes a non-I/Q data transmission method for a general public radio interface, which is used for REC. The data is transmitted between the RE and the RE. The method can be performed by the REC and transmitted to the RE of the peer. Alternatively, the method can be executed by the RE and transmitted to the REC of the peer. The flow is shown in Figure 1.
  • the data transmitted on the CPRI interface is added to the packet header and encapsulated into a packet;
  • the header includes at least one or more of the following fields: a destination address field. , source address field, packet type field, packet start/end flag field, data length field, sequence number field.
  • every 256 CPRI frames constitute a superframe with a length of 10 ms per 150 superframes.
  • the superframe is transmitted through the CPRI interface.
  • Embodiments of the present invention may transmit non-I/Q data into a superframe to transmit the superframe through the universal public radio interface before the general public radio interface is located in downlink modulation or after uplink demodulation.
  • Non-I/Q data can be transmitted between the REC and the REC, and the non-I/Q data is carried in the CPRI frame.
  • Another embodiment of the present invention provides a non-I/Q data transmission method for a common public radio interface. The transmission method is used for data transmission between an REC and an RE. The method can be performed by the REC and transmitted to the peer RE. Alternatively, the method may also be performed by the RE and transmitted to the REC of the peer end. The process is as shown in FIG. 2, including:
  • the data may be added to a data packet header, and the information packet may be as shown in FIG. 3, and includes at least one of the following fields:
  • DstAddr destination address field, including the destination address of RE or REC, the length of this field depends on the number of RE/RECs of a base station system;
  • SrcAddr source address field, including the source address of RE or REC, the length of this field depends on the number of RE/RECs of a base station system;
  • Type The packet type field; used to indicate whether the packet is empty. When the bit is 0, it indicates an empty packet;
  • SOP/EOP A packet start/end flag field indicating the beginning and end of a long non-IQ data frame transmitted by multiple packets. This field contains two bits. 2, bl0 indicates the start of the non-IQ data frame, 2'bO1 indicates the end of the non-IQ data frame, 2'bOO indicates the middle of the non-IQ data frame; 2'bll indicates that the non-IQ data frame does not need to be split into multiple packets Carry out transmission;
  • Length Data length field, this field indicates the length of the payload in this packet, the unit is Byte;
  • sequence number field the sequence number of the same type of packet, the receiver uses this field to check the out-of-order and packet loss of the accepted packet
  • Payload The payload field, which is the payload carried in the packet.
  • the Information Packet Container is part of a User Data Block in a basic frame.
  • the user data block is composed of a basic frame with a W number of 1 to 15.
  • step 203 can be as shown in FIG. 4, specifically:
  • the split method can be: first get the number of bytes of the packet container, then split the packet into two or more sub-blocks as large as the packet container, and map each sub-block to the packet container .
  • a packet can be carried into multiple packet containers at the time of encapsulation. That is, when the packet is less than or equal to the packet container, the packet can be carried into a packet container, and if there is still space in the packet container, padding bits are added in the spare space. When the packet is larger than the packet container, the packet can be carried into the NIPC packet container, and it is determined whether there is space in the last packet container, and if so, the padding bit is added.
  • the specific calculation method can be:
  • NIPC is the number of packet containers used to carry a single packet.
  • 204 can be as shown in FIG. 5, specifically:
  • NPACKET NPACKET
  • the r ( a ) function returns the largest integer less than or equal to a .
  • NST packet container blocks containing padding bits can be added at the end of each superframe
  • NST 256 - NPACKET X NIPC.
  • a manner of generating a superframe for various different information packets is proposed to improve the usability of the method of the embodiment of the present invention.
  • Another embodiment of the present invention provides a non-I/Q data transmission device of a general public wireless interface.
  • the device may be specifically a REC or an RE.
  • the structure is as shown in FIG. 6, and includes: a package module. Block 1, mapping module 2, bearer module 3 and transport module 4.
  • the encapsulating module 1 is configured to: when the universal public radio interface is located before the downlink modulation or after the uplink demodulation, add the data transmitted on the general public radio interface to the packet header and encapsulate the packet into a packet; the packet header includes at least the following One or more fields: destination address field, source address field, packet type field, packet start/end flag field, data length field, sequence number field, payload field.
  • the mapping module 2 is configured to map the information packet into one or more information container.
  • the bearer module 3 is configured to carry the information container into a superframe.
  • the transmission module 4 is configured to transmit the super frame through the universal public wireless interface.
  • Embodiments of the present invention may transmit non-I/Q data into a superframe to transmit the superframe through the universal public radio interface before the general public radio interface is located in downlink modulation or after uplink demodulation.
  • Non-I/Q data can be transmitted between the REC and the REC, and the non-I/Q data is carried in the CPRI frame.
  • Another embodiment of the present invention provides a non-I/Q data transmission device of a general public radio interface.
  • the device may be a REC or an RE.
  • the process is as shown in FIG. 7 , and includes: a package module 1 , a mapping module 2 , and Carrying module 3.
  • the encapsulating module 1 is configured to: when the universal public radio interface is located before the downlink modulation or after the uplink demodulation, add the data transmitted on the general public radio interface to the packet header and encapsulate the packet into a packet.
  • the data header may be added to the data packet header, and the data packet header may be as shown in FIG. 3, and includes the following fields:
  • DstAddr destination address field, including the destination address of RE or REC, the length of this field depends on the number of RE/RECs of a base station system;
  • SrcAddr source address field, including the source address of the RE or REC, the length of this field depends on the number of RE/RECs of a base station system;
  • Type The packet type field; used to indicate whether the packet is empty. When this bit is 0, it indicates an empty packet;
  • SOP/EOP A Packet Start/End Flag field that indicates the beginning and end of a long non-IQ data frame that is transmitted by multiple packets. This field contains two bits. 2, bl0 indicates the start of the non-IQ data frame, 2'b01 indicates the end of the non-IQ data frame, 2'b00 indicates the middle of the non-IQ data frame; 2'bl l indicates that the non-IQ data frame does not need to be split into multiple packets Transfer in
  • Length Data length field, this field indicates the length of the payload in this packet, the unit is Byte;
  • sequence number field the sequence number of the same type of packet, the receiver uses this field to check the out-of-order and packet loss of the accepted packet
  • Payload The payload field, which is the payload carried in the packet.
  • the mapping module 2 is configured to map the information packet into one or more information container.
  • the Information Packet Container is part of a User Data Block in a basic frame.
  • the user data block consists of the basic frame of the W sequence number (defined in 4.2.7.1.1 of the CPRI protocol) of 1-15.
  • mapping module 2 can include the splitting unit 21.
  • the splitting unit 21 is configured to determine whether the number of bytes of the information packet is greater than a packet container, and if yes, split the information packet according to the number of bytes of the information packet container, and each The sub-block is mapped into the packet container; if not, the packet is mapped into the packet container.
  • the mapping module 2 may also include a first filling unit 22.
  • the first filling unit 22 is configured to determine whether the packet container has a spare space, if There is then a padding bit added to the vacancy.
  • a package can be carried in multiple packet containers at the time of packaging. That is, if the packet is smaller than or equal to the packet container, the packet can be carried into a packet container, and if there is still space in the container, padding bits are added in the spare. When the packet is larger than the packet container, the packet can be carried into the NIPC packet container, and it is judged whether there is space in the last packet container, and if so, the padding bit is added.
  • the specific calculation method can be:
  • NIPC is the number of packet containers used to carry a single packet.
  • the bearer module 3 is configured to carry the packet container into the superframe.
  • the bearer module 3 may further include a merging unit 31 and a second filling unit 32.
  • the merging unit 31 is configured to form all information container containers carrying the same information packet into an Information Packet Container Block.
  • the second padding unit 32 is configured to encapsulate the packet container block into a superframe; and add a padding bit packet container block in the space of the superframe. Wherein, all of the padding bit packet container blocks are padding bits.
  • the r ( a ) function returns the largest integer less than or equal to a .
  • NST 256 - NPACKET X NIPC.
  • a method for generating a superframe for various different information packets is proposed to improve the usability of the method of the embodiment of the present invention.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may be embodied in the form of a software product in the form of a software product, or a part of the technical solution, which is stored in a storage medium, including a plurality of instructions. All or part of the steps of the method of the various embodiments of the present invention are performed by a computer device (which may be a personal computer, server, or network device, etc.).
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Abstract

La présente invention concerne le domaine des technologies de communication, et fournit un procédé de transmission de données non-I/Q et un dispositif pour une interface radio publique commune. Selon l'une des formes de réalisation de la présente invention, le dispositif comprend : un module d'encapsulation et un module de transmission ; et le procédé consiste en ce qui suit : lorsque l'interface radio publique commune est située avant une modulation de liaison descendante ou après une démodulation de liaison montante, ajouter un en-tête de paquet à des données transmises sur l'interface radio publique commune et encapsuler les données dans un paquet d'information, l'en-tête de paquet comprenant au moins un ou plusieurs des champs suivants : un champ d'adresse de destination, un champ d'adresse de source, un champ de type de paquet, des champs d'indicateur de début/fin de paquet, un champ de longueur de données, et un champ de numéro de série ; mapper le paquet d'information avec un ou plusieurs conteneurs de paquets d'information ; prendre en charge le conteneur de paquet d'information en utilisant une supertrame ; et transmettre la supertrame par le biais de l'interface radio publique commune. Les modes de réalisation de la présente invention permettent ainsi de mettre en œuvre la prise en charge de données non-I/Q dans la trame radio publique commune, et la transmission par le biais d'une interface radio.
PCT/CN2012/070843 2011-03-04 2012-02-02 Procédé de transmission de données non-i/q et dispositif d'interface radio publique commune WO2012119491A1 (fr)

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Application Number Priority Date Filing Date Title
EP12755286.7A EP2672743B1 (fr) 2011-03-04 2012-02-02 Procédé de transmission de données non-i/q et dispositif d'interface radio publique commune

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CN201110051397.3 2011-03-04
CN201110051397.3A CN102158461B (zh) 2011-03-04 2011-03-04 通用公共无线接口的非i/q数据传输方法和装置

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EP2785099B1 (fr) 2011-11-25 2019-05-08 Nec Corporation Station sans fil et procédé de traitement de données d'utilisateur avec une station sans fil
EP3506711A1 (fr) 2011-11-25 2019-07-03 NEC Corporation Station radio et procédé de traitement de données d'utilisateur avec une station radio
EP2785139B1 (fr) 2011-11-25 2019-06-05 Nec Corporation Station sans fil et procédé de traitement de données d'utilisateur avec une station sans fil
JP6146310B2 (ja) 2011-11-25 2017-06-14 日本電気株式会社 無線局、及び無線局によるユーザーデータの処理方法
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CN104539388B (zh) * 2014-12-08 2020-05-05 中兴通讯股份有限公司 数据发送、接收方法和装置
CN111488171B (zh) * 2019-01-29 2023-11-03 杭州海康威视数字技术股份有限公司 一种数据生成和解析方法、装置及电子设备
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EP2672743B1 (fr) 2018-06-27
EP2672743A1 (fr) 2013-12-11
CN102158461A (zh) 2011-08-17
CN102158461B (zh) 2014-01-08
EP2672743A4 (fr) 2014-02-19

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